Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4TMT callsign genealogy
Currently held by CHRISTIANO, ROBERT
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by N4TMT's current licensee, walking backwards.
- TERRELL, TIMOTHY MALgranted 2010-09-14cancelled 2014-07-25
Successor callsigns
Callsigns held now by people who previously held N4TMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4TMT, oldest first.
- CHRISTIANO, ROBERT FL1992-07-28 → cancelled 2004-07-29
- TERRELL, TIMOTHY M AL2024-08-20 active